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20141205 = 357267409
BaseRepresentation
bin100110011010…
…1010010010101
31101220021112120
41030311102111
520124004310
61555410153
7333124500
oct114652225
941807476
1020141205
1110407427
1268b3959
134232796
142964137
151b7cb70
hex1335495

20141205 has 48 divisors (see below), whose sum is σ = 38139840. Its totient is φ = 9047808.

The previous prime is 20141203. The next prime is 20141207. The reversal of 20141205 is 50214102.

It is an interprime number because it is at equal distance from previous prime (20141203) and next prime (20141207).

It is not a de Polignac number, because 20141205 - 21 = 20141203 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20141201) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 49041 + ... + 49449.

It is an arithmetic number, because the mean of its divisors is an integer number (794580).

Almost surely, 220141205 is an apocalyptic number.

It is an amenable number.

20141205 is a deficient number, since it is larger than the sum of its proper divisors (17998635).

20141205 is a wasteful number, since it uses less digits than its factorization.

20141205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 498 (or 491 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 20141205 is about 4487.8953864813. The cubic root of 20141205 is about 272.0790796955.

Adding to 20141205 its reverse (50214102), we get a palindrome (70355307).

The spelling of 20141205 in words is "twenty million, one hundred forty-one thousand, two hundred five".

Divisors: 1 3 5 7 15 21 35 49 67 105 147 201 245 335 409 469 735 1005 1227 1407 2045 2345 2863 3283 6135 7035 8589 9849 14315 16415 20041 27403 42945 49245 60123 82209 100205 137015 191821 300615 411045 575463 959105 1342747 2877315 4028241 6713735 20141205